getBackground

child - Child to stop at when compositing children of gn into
the background image.

aoi - The area of interest for rendering (used to cull
nodes that don't intersect the region to render).

isDynamic

public boolean isDynamic()

Returns true if successive renderings (that is, calls to
createRendering() or createScaledRendering()) with the same arguments
may produce different results. This method may be used to
determine whether an existing rendering may be cached and
reused. It is always safe to return true.

createRendering

Creates a RenderedImage that represented a rendering of this image
using a given RenderContext. This is the most general way to obtain a
rendering of a RenderableImage.

The created RenderedImage may have a property identified
by the String HINTS_OBSERVED to indicate which RenderingHints
(from the RenderContext) were used to create the image.
In addition any RenderedImages
that are obtained via the getSources() method on the created
RenderedImage may have such a property.